python -m pip install git+https://github.com/open-mmlab/mmdetection.git@dev-3.x mim install git+https://github.com/open-mmlab/mmdetection.git@dev-3.x python -m pip ...

I guess this might be a version problem. #1734 was fixed after the release of MMPose v0.29. So if you install MMPose as a third-party package, you might miss it.

First, create a virtual environment and install the necessary packages. This time, the demo will be executed on the CPU in a Windows environment, but I will install PyTorch with the following command ...